Shuttle-motion



(No Model.)

L. E. ROSS.

SHUTTLE MOTION TOR Looms.

Patented Mey l5, 1888.

iurrnn LESTER E. ROSS, OF ST. PAUL, MINNESOTA, ASSIGNOR TO THE ROSS LOOM COMPANY, OF NASHUA, NEI/V HAMPSHIRE.

SHUTTLEWWOTIONFOR LOOlVlS.

SPECIFICATION forming part of Letters Patent No. 383,077, dated May 15, 1888.

Application led January 5,1888. Serial No. 259,846. (No model.)

.To a/ZZ whom it may' concern:

Be it known that I, LEsTER E. Ross, of St. Panl,in the county of Ramsey and State ofMinnesota, have invented certain new and useful Improvements in Shuttle-Motions for Looms, of-whicn the following, taken in connection with the accompanying drawings, is a specication.

This invention relates to apparatus for propeiling the shuttle in looms, and is in the nature of an improvement upon the devices set. forth in my pat-ent, No. 233,551, dated October 19, 1880, for shuttle-motion for looms.77 In suid former patent I mounted a series of short coiled springs on a fulcrum-shaft as an axis common to them all, and while one end of each spring was secured to a rigid cross-bar of the frame the other end of each was cou-A nected to a rocking plate or bar, termed a 2O "spring cover. This vibrating cover had erected upon it the picker-stick arm, and also another rigid arm acted upon by a spiralcam to press both arms back against the resistance of the series of springs, the recoil of which,

when suddenly released, served to drive the shuttle as required. The springs thus arranged were subject to very severe strains, and in case of breakage of one or more of them it was necessary to remove the fulcrumshaft from one or 3o both of its bearings, detach from it endwise all the springs between the end and the broken one, substitute a new one, and replace the oth ers properly engaged with the cross-bar and Vibrating cover. The delay and difficulty incident to such changes are obviated by my present improvement, under which any given spring can be removed and lreplaced without disturbing the others.

In the drawings, Figure 1 represents parts of 4o theloom-frame, showing my invention applied thereto. Fig. 2 is a front view of the series of springs which actuate the picker-stick, ar-

ranged according to my present invention.

Fig. 3 is a crosssection on line .x .fr of Fig. 2.

The loomframe A has on its picking-shaft B two spirally-langed cams, C, which in their rotation act upon antifriction rollers D at the upper ends of arms E, which project upwardly from the vibratory spring-covers F. Such action by the cams vibrates the arms E, and with 5o them the picker-stick arms G, also erected on thespring-covers F, about as shown 1n my former patent. The cams are reversed on the shaft B, and they act alternately on the two arms E, first throwing aside one of them and then the other, compressing the series or" springs connected with each spring-cover alternately. The reaction of the springs,when the roller D becomes disengaged from the cam C, throws the shuttle alternately to right and left.

The spring-cover F is pivoted at each end, as at F', Fig. 3, and beneath one of its edges 1s a range of short vertical spiral springs, J ,each standing endwise between the free edge oi the cover F and the upper surface of a xed crossbar, H, so that each spring is alternately compressed and elongated as the arnlE on its cover F is vibrated. The under surface of the springcover at its free edge and the upper side of the cross-bar H have each a succession of short 7o studs, I, to engage the ends of the several springs and retain them in their positlon. When any one spring becomes broken, 1t is readily detached, and a new one can be introduced by placing one end over its stud and then compressing and shortening it sufficiently to pass the other end over the other stud. The combined force or power of the range oi' springs may thus be increased or diminished at will Y by varying the number of springs in the line, 8o as may be desired, Without dismembering the structure to add to or take from the number.

I am awareofthepatent to Smith,No. 133,493, dated November 26, 1872, for loom picking mechanism, in which is shown at each end of the frame a horizontally-vibrating lever connected at its free end to the picker-staff by an adjustable rod, Asaid lever being actuated by a rotating cam and bya single spiral spring compressed thereby. The arrangement and com- 9o bination of parts is Very dissimilar to mine, and is such as to render a high speed impossible.

I disclaim all that is therein set forth.

My present invention may be further distinguished from that shown in my former patent by its greater simplicity of construction, the complete independence of each spring as to insertion and removal, the entire omission of the fulcrum-shaft for the series of springs, studs, I, serving to hold said springs in place, and of separate perforation of the cross-bar substantially as set forth. and spring-Cover to receive the two ends of Iutestimouy whereofI have signed my'na-me each spring. to this speciication,in the presence of two sub- 5 I claim as my inventionsoribing Witnesses, on this 20th day of August, I 5

The rigid cross-bar H, the laterally vibrat- A. D. 1887.

ing spring-cover F, and the arms E and G LESTER E. ROSS. mounted thereon, in combination with these- Witnesses: ries of vertical and separately removable W. T. DRAKE,

1o springs J, and the corresponding series of L. E. OGLE. 

